Workbook Detail
Addition Addition Three Digit — Set 21
238 + 711 = ___
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Answer: 949
- Operand1
- 238
- Operand2
- 711
- Operator
- +
360 + 630 = ___
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Answer: 990
- Operand1
- 360
- Operand2
- 630
- Operator
- +
134 + 704 = ___
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Answer: 838
- Operand1
- 134
- Operand2
- 704
- Operator
- +
416 + 423 = ___
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Answer: 839
- Operand1
- 416
- Operand2
- 423
- Operator
- +
345 + 653 = ___
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Answer: 998
- Operand1
- 345
- Operand2
- 653
- Operator
- +
305 + 353 = ___
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Answer: 658
- Operand1
- 305
- Operand2
- 353
- Operator
- +
230 + 463 = ___
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Answer: 693
- Operand1
- 230
- Operand2
- 463
- Operator
- +
100 + 452 = ___
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Answer: 552
- Operand1
- 100
- Operand2
- 452
- Operator
- +
302 + 396 = ___
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Answer: 698
- Operand1
- 302
- Operand2
- 396
- Operator
- +
528 + 220 = ___
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Answer: 748
- Operand1
- 528
- Operand2
- 220
- Operator
- +
122 + 611 = ___
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Answer: 733
- Operand1
- 122
- Operand2
- 611
- Operator
- +
153 + 541 = ___
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Answer: 694
- Operand1
- 153
- Operand2
- 541
- Operator
- +
642 + 246 = ___
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Answer: 888
- Operand1
- 642
- Operand2
- 246
- Operator
- +
422 + 126 = ___
Show answer
Answer: 548
- Operand1
- 422
- Operand2
- 126
- Operator
- +
423 + 565 = ___
Show answer
Answer: 988
- Operand1
- 423
- Operand2
- 565
- Operator
- +
743 + 102 = ___
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Answer: 845
- Operand1
- 743
- Operand2
- 102
- Operator
- +
523 + 316 = ___
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Answer: 839
- Operand1
- 523
- Operand2
- 316
- Operator
- +
161 + 405 = ___
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Answer: 566
- Operand1
- 161
- Operand2
- 405
- Operator
- +
257 + 300 = ___
Show answer
Answer: 557
- Operand1
- 257
- Operand2
- 300
- Operator
- +
416 + 113 = ___
Show answer
Answer: 529
- Operand1
- 416
- Operand2
- 113
- Operator
- +
Teaching Notes
Download this free addition three digit math worksheet. Uniquely generated with an answer key — great for homework, practice, or assessment.
Features
- Printable PDF format
- Answer key included
- Multiple difficulty levels
- Classroom and home friendly
How to Use These Worksheets
- Select a three digit set.
- Print or use on-screen.
- Check answers and practice again.
Tips
- Start with easier sets and move up gradually.
- Practice in short sessions (10–15 minutes).
- Review mistakes and redo similar problems.
Frequently Asked Questions
How do I use this Addition Three Digit Math Worksheet worksheet?
Print the worksheet and complete the problems. Each set number generates a unique arrangement. Use the same set number for all students in a class for consistent assessment.
Is there an answer key?
Yes — every worksheet includes a complete answer key. Print it separately or view it on screen.